Studies on the Properties of knit Fabrics after Dyeing with Reactive Dye

Abstract

This study has been sorted on effect of dyeing in physical characteristics of different type of cotton knitted fabric. For complete this study we have used pre-treated sample fabric and dyed in lab dyeing machine. We took multiple samples of four type of fabric. And these are Lycra single jersey, Single jersey, Single jersey slub, 2×2 Lycra rib. We dyed these fabric sample with same recipe, same atmospheric condition in light and deep shade. We have measured this samples GSM, WPI, CPI, Stitch length, Shrinkage, Abrasion resistance before dyeing and after dyeing. This measuring data we have compared with before dyeing and after dyeing. We saw sometimes this data increase and sometimes decrease. In the case of GSM, WPI, CPI data is increased after dyeing process. On the other hand, stitch length is decrease after dyeing. That was happened for after dyeing fabric makes more compacter because of absorption of dyes and chemicals. In case of shrinkage, we saw some fabric got expansion and some fabric got contraction. For Abrasion resistance, we utilized that better construction has better abrasion resistance. Here we investigated thus characteristics of cotton knitted fabric after dyeing process. This paper tries to find out the major changes characteristics of cotton knit fabric from before dyeing and after dyeing. Hope this paper will help those people who are in textile dyeing industry.